Adil Wahid Butt

CNT suspended nanofluid analysis in a flexible tube with ciliated walls

Abstract.Abstract: The current investigation is carried out to analyze the effect of heat transfer in a flexible tube with ciliated walls and carbon nanotubes. The problem has been formulated in the form of non-linear partial differential equations, which are then reduced to ordinary differential equation form using the dimensionless variables and the conditions of low Reynolds number and long wavelength. Exact solutions have been obtained for velocity, temperature and pressure gradient and graphs for velocity, temperature and pressure gradient have been plotted for a better analysis of the solution.

Ferromagnetic effects for peristaltic flow of Cu–water nanofluid for different shapes of nanosize particles

In this study, tube flow of Cu–water nanofluid is considered with effect of different shaped nanoparticles. Hamilton–Crosser model is used for the effective thermal conductivity of the nanofluids. In addition, heat transfer through the tube is also studied for this problem. Exact solutions are obtained for governing modified equations with long wavelength and low Reynold number approximation case, and are discussed graphically.

Physiological Transportation of Casson Fluid in a Plumb Duct

This paper is devoted to a study of the peristaltic motion of a Casson fluid of a non-Newtonian fluid accompanied in a horizontal tube. To characterize the non-Newtonian fluid behavior, we have considered the Casson fluid model. Suitable similarity transformations are utilized to transform the governing partial differential momentum into the non-linear ordinary differential equations. Exact analytical solutions of these equations are obtained and are the properties of velocity, pressure and profiles are then studied graphically.

Carbon nanotubes analysis for the peristaltic flow in curved channel with heat transfer

In the present article, we have investigated the effects of heat transfer on peristaltic flow of carbon nanoparticles in a curved channel. Governing equations for flow and heat transfer are derived by analysing the effects of curvature of the curved channel and taking inboard the long wavelength and small Reynolds number assumptions. Exact solution is obtained for the stream function, which is used to find the velocity of the fluid flow in the curved channel. Effects of curvature parameter and Grashof number on the velocity and pressure gradient are analysed. The effect of heat transfer through the curved channel is also studied.

Heat transfer analysis of viscoelastic fluid flow due to metachronal wave of cilia

This study describes ciliary motion on the transport of fluids in human body with heat transfer. The mathematical model of the flow of a Jeffrey fluid in a tube of finite length is considered due to metachronal wave of cilia motion. Flow equations have been modeled and simplified using similarity variables. Exact solutions of the formulated problem have been obtained for velocity, temperature and pressure gradient and graphs for velocity, pressure rise, pressure gradient and temperature profile have been plotted and studied for different values of specific physical parameters. Trapping phenomena and isotherms are presented at the end of the paper.

Bio mathematical venture for the metallic nanoparticles due to ciliary motion

BACKGROUND AND OBJECTIVES The present investigation is associated with the contemporary study of viscous flow in a vertical tube with ciliary motion. METHODS/RESULTS/CONCLUSIONS The main flow problem has been modeled using cylindrical coordinates; flow equations are simplified to ordinary differential equations using longwave length and low Reynolds number approximation; and exact solutions have been obtained for velocity, pressure gradient and temperature. Results acquired are discussed graphically for better understanding. Streamlines for the velocity profile are plotted to discuss the trapping phenomenon. It is seen that with an increment in the Grashof number, the velocity of the governing fluids starts to decrease significantly.

Entropy generation analysis for the peristaltic flow of Cu-water nanofluid in a tube with viscous dissipation

The purpose of the current investigation is to examine the influence of different physical parameters on the entropy generation. The entropy generation number due to heat transfer and fluid friction is formulated. The velocity and temperature distributions across the tube are presented along with pressure attributes. Exact analytical solution for velocity and temperature profile is obtained. It is found that the entropy generation number attains high values in the region close to the walls of the tube, while it falls to low values near the center of the tube.

Biomechanically driven unsteady non-uniform flow of Copper water and Silver water nanofluids through finite length channel

BACKGROUND AND OBJECTIVES This paper aims to investigate the unsteady flow of two types of nanofluids i.e Copper water nanofluids and Silver water nanofluids) through finite length non-uniform channel driven by peristaltic sinusoidal wave propagations. METHODS The governing equations are reduced in linear form using dimensional analysis and considering the low Reynolds number and large wavelength approximations. The time dependent temperature field, axial velocity, transverse velocity and pressure difference are obtained analytically in closed form solution. Trapping phenomenon is also discussed with the help of contour plots of stream function. A comparative study of pure water (Newtonian fluid), Copper water nanofluids and Silver water nanofluids under the influence of relevant physical parameters is made in graphical form and also discussed. The effects of absorption parameter and Grashof number on velocity profiles, temperature profiles and pressure distribution along the length of channel are examined. RESULTS CONCLUSIONS The computational results reveal that the velocity profile is maximum for Silver water nanofluids however, it is least for Copper water nanofluids. It is also concluded the temperature profile is more for pure water in comparison to Silver water and Copper water nanofluids. This model is applicable to design, micro-peristaltic pumps which help in Nanoparticle-based targeted drug delivery and to transport the sensitive or corrosive fluids, sanitary fluids, slurries and noxious fluids in nuclear industry.

BIOPHYSICAL HEAT TRANSFER STUDY FOR THE CONTRACTION AND EXPANSION OF MUSCLES WITH MULTI-WALL CARBON NANOTUBES

The present investigation is associated with the contemporary study of viscous flow in a vertical tube with temperature dependent viscosity. The main flow problem has been modeled using cylindrical coordinates and flow equations are simplified to ordinary differential equations using longwave length and low Reynold’s number approximation and exact solutions have been obtained for velocity, pressure gradient and temperature. Results acquired are discussed graphically for better understanding. It is seen that with an increment in the Grashof number, the velocity of the governing fluids start to decrease significantly and pressure gradient is higher for pure water as compared to multi-walled carbon nanotubes (MWCNTs) due to low density. As the specific heat is very high for pure water as compared to the multi-wall CNTs, it rise temperature of the muscles for the case of pure water as compared to the MWCNTs. Furthermore, it is noted that the trapped bolus starts to decrease in size as the buoyancy forces are dominant as compared to viscous force.

Entropy Generation Analysis in Convective Ferromagnetic Nano Blood Flow Through a Composite Stenosed Arteries with Permeable Wall

The study of heat transfer is of significant importance in many biological and biomedical industry problems. This investigation comprises of the study of entropy generation analysis of the blood flow in the arteries with permeable walls. The convection through the flow is studied with compliments to the entropy generation. Governing problem is formulized and solved for low Reynolds number and long wavelength approximations. Exact analytical solutions have been obtained and are analyzed graphically. It is seen that temperature for pure water is lower as compared to the copper water. It gains magnitude with an increase in the slip parameter.